[INFO] cloning repository https://github.com/kamocyc/rust_lisp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kamocyc/rust_lisp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamocyc%2Frust_lisp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamocyc%2Frust_lisp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cbf8959f235c846ae007cb0d9daf740e808db716
[INFO] checking kamocyc/rust_lisp against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamocyc%2Frust_lisp" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kamocyc/rust_lisp on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kamocyc/rust_lisp
[INFO] finished tweaking git repo https://github.com/kamocyc/rust_lisp
[INFO] tweaked toml for git repo https://github.com/kamocyc/rust_lisp written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/kamocyc/rust_lisp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79341b815096f0bad03ab7bd0b1566b4609513a986df851692050775f08ceeb1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "79341b815096f0bad03ab7bd0b1566b4609513a986df851692050775f08ceeb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79341b815096f0bad03ab7bd0b1566b4609513a986df851692050775f08ceeb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79341b815096f0bad03ab7bd0b1566b4609513a986df851692050775f08ceeb1", kill_on_drop: false }`
[INFO] [stdout] 79341b815096f0bad03ab7bd0b1566b4609513a986df851692050775f08ceeb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTUP_TOOLCHAIN=4a04890980766cc79878135f5ade8c0c4321e943" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/tmp/crater-runner-fifo/jobserver-crater-fwd" "/opt/rustwide/cargo-home/bin/cargo" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16471d49d6c65cd9d9cb8cd280973f68c085dc72d3e2fd5e432f0c2932b7728e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "16471d49d6c65cd9d9cb8cd280973f68c085dc72d3e2fd5e432f0c2932b7728e", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_lisp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Stack`
[INFO] [stdout]    --> src/main.rs:154:8
[INFO] [stdout]     |
[INFO] [stdout] 154 | struct Stack<T> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/main.rs:160:10
[INFO] [stdout]     |
[INFO] [stdout] 160 |   pub fn new() -> Stack<T> {
[INFO] [stdout]     |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]    --> src/main.rs:167:10
[INFO] [stdout]     |
[INFO] [stdout] 167 |   pub fn push(&mut self, elem: T) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]    --> src/main.rs:172:10
[INFO] [stdout]     |
[INFO] [stdout] 172 |   pub fn pop(&mut self) -> T {
[INFO] [stdout]     |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Stack`
[INFO] [stdout]    --> src/main.rs:154:8
[INFO] [stdout]     |
[INFO] [stdout] 154 | struct Stack<T> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/main.rs:160:10
[INFO] [stdout]     |
[INFO] [stdout] 160 |   pub fn new() -> Stack<T> {
[INFO] [stdout]     |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]    --> src/main.rs:167:10
[INFO] [stdout]     |
[INFO] [stdout] 167 |   pub fn push(&mut self, elem: T) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]    --> src/main.rs:172:10
[INFO] [stdout]     |
[INFO] [stdout] 172 |   pub fn pop(&mut self) -> T {
[INFO] [stdout]     |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "16471d49d6c65cd9d9cb8cd280973f68c085dc72d3e2fd5e432f0c2932b7728e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16471d49d6c65cd9d9cb8cd280973f68c085dc72d3e2fd5e432f0c2932b7728e", kill_on_drop: false }`
[INFO] [stdout] 16471d49d6c65cd9d9cb8cd280973f68c085dc72d3e2fd5e432f0c2932b7728e